Window screen



March 14, 1950 us ET AL 2,500,470

WINDOW SCREEN Filed Jan. 15, 1948 INVENTORS ATTORNEYS Patentecl Mar. 14,1950 WINDOW SCREEN David J. Rust and Jack Caliil, assignors toApplication January 13, 1948,

1 Claim.

This invention relates to improvements in frameless window screens.

One object of the invention is to provide a window screen especiallyuseful on metal casement-type windows; the screen being attached, innovel manner, to the fixed frame of such a casement.

Another object of the invention is to provide a frameless window screenwhich comprises a rectangular section of wire cloth having a top bar anda bottom bar secured to corresponding edges thereof; the top bar beingattached to the casement by saddle brackets, and the lower bar beingsecured in place and the screen tensioned by novel turns which includebar engaging cams.

An additional object of this invention is to provide a window screen, ofthe type described, which is easy to install, and thereafterquickdetachable, without the use of tools, for cleaning or maintenance.

A further object of the invention is to provide a neat, attractive,inexpensive window screen for easements, and one which will beexceedingly effective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claim.

In the drawings:

Fig. l is a front elevation of the window screen in place on a casement;one of the bar locking and screw tensioning turns being shown in holdingposition, while the other is shown in released position.

Fig. 2 is a side elevation showing the screen in place on the casement.

Fig. 3 is a fragmentary sectional elevation showing the cross sectionalconfiguration of one of the bars, and the manner of attachment of thewire cloth thereto.

Fig. 4 is an under side view of one of the turns, detached.

Referring now more particularly to the characters of reference on thedrawings, the improved window screen comprises a rectangular section Iof wire cloth having a transverse top bar 2 and a transverse bottom bar3 attached to corresponding edges thereof; said bars 2 and 3 projecting,in symmetrical relation, beyond the side edges of the section I.

Each of the bars 2 and 3 includes a longitudinal foot 4 along one edge,and an outwardly, longitudinally extending offset 5 intermediate itsedges. The longitudinal edge portion opposite H. Jensen, San Leandro,

Ry-Lock Company, Inc., San Leandro, Calif., a corporation of CaliforniaSerial No. 2,077

the foot is bent inwardly, and back toward the offset 5, to form aholding flange 6, and the adjacent portion of the screen extends overthe inner face of said flange and thence is frictionally engaged betweenthe same and the adjacent portion of the bar. In this manner the sectionI of wire cloth is effectively but removably attached, at opposite ends,to the corresponding bars, with the latter extending transversely ofsaid section.

The numeral 7 indicates, generally, a metallic casement which includes,on one side thereof, a fixed rectangular frame 8 having a top flange 9,side flanges Ill, and a bottom flange ll, which flanges define thewindow opening I2.

The window screen is disposed for use with the wire cloth section Ioverlying the window opening I2, with the top bar 2 and bottom bar 3lapping and abutting against the top flange 9 and bottom flange I I, andalso projecting across adjacent end portions of the side flanges ll].

A pair of saddle brackets I3 are affixed to the side flanges H) of theframe 8 adjacent the upper portions thereof, but below the top bar 2.Said saddle brackets l3 each include a vertical slot M thrOugh which ascrew I5 is threaded into the corresponding flange it, whereby saidbrackets I3 are initially vertically adjustable to properly position andlevel the top bar 2.

Each bracket I3 includes an upstanding saddle I6 which engages the loweredge of the top bar 2 in supporting relation at the projecting endsthereof, which lower edge is rounded, as at I1, to matchingly engage inthe saddle, which is similarly rounded. The brackets l3 include, attheir lower end, an outwardly projecting finger tab I8 which facilitatesinitial installation and adjustment.

In the above described manner, the window screen is suspended from thetop bar 2 in position overlying the window opening I2, and said screenis tensioned, and the bottom bar 3 locked,

in the following manner:

Directly above each of the projecting ends of' the bottom bar 3 thecorresponding side flanges 50 are fltted with a turn, indicatedgenerally at I9; each turn l9 including a rotary, eccentric cam 20. Theturns are each carried on a flanged bushing B secured to thecorresponding side flange IE3 by a screw 2I, and a radial finger '22projects from each cam 20 in clearance relation to the correspondingside flange l0. Each radial flnger 22 is formed with an outwardlyprojecting wing 23 for manual engagement.

The turns l9 are set sufficiently close to the bottom bar 3 so that whenturned from a released position with the finger 22 and wing 23projecting upwardly, to a holding position with said parts projectingdownwardly, the cam 20 engages the adjacent edge of the bottom bar 3 andurges it downwardly, thus efiectively tensioning the section I of wirecloth. At the same time the fingers 22 of the turns l9 ride over theface of the bottom bar 3' to lock it against outward displacement fromthe fixed frame 8'. It will thus be recognized that the turns l9 serve.the dual purpose of tensioning the section I of wire cloth, and lockingthe bottom bar 3 in its normal position of use.

The described window screen is quick-detachaswinging the turns 19 toreleased position and then lifting the top bar 2 from the saddlebrackets I3.

By reason of the particular configuration of the bars 2 and 3 in crosssection, the section of wire cloth 1 lies in engagement with thecorresponding side flanges ill to assure against the passagetherebetween of insects.

From the foregoing description it will be readily seen that there hasbeen produced such a device as substantially fulfills the objects of theinvention, as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchDAVID J. RUST. JACK H. JENSEN. REFERENCES CITED The following referencesare of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 551,095 Ramsden Dec. 10, 1895'2,415,200 Willett Feb. 4, 1947 FOREIGN PATENTS Number Country Date389,615 Great Britain Mar. 23, 1933

